Polymer degradation rates and persisting brain lesions post endovascular procedures
Bibliographic record
Abstract
Polymer coating emboli have been affiliated with persisting brain lesions after endovascular procedures.1–6 Patient symptoms include headaches, fevers, chills (ie, constitutional symptoms), neurological presentations of focal weakness, sensory and visual deficits, and seizures. Follow-up imaging highlights distinct areas of contrast enhancement in slightly different locations, with some lesions increasing in number and size (see figure 1). Polymer particles from various coating compositions have different rates of degradation, absorption, and metabolism or excretion (DAM/E). These varied rates of DAM/E may have impacts on persisting brain lesions, recurrent patient symptoms, and adverse event outcomes. Figure 1 Characteristic MRI of patients with persisting brain lesions. T1 postcontrast images highlighting an increase in the number and size of lesions (white arrows) over a 12 month period. Also note formation of new enhancing lesions. Images used with permission by Williams and Wilkins Co. (license ID: 1100407-1). Degradation is the chemical breakdown of a polymer by hydrolysis, oxidation, or enzymatic processes. A faster degradation rate may result in less obstruction within blood vessels or reduced presence …
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.005 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.004 | 0.001 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".